package org.smart4j.framework.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * Created by Administrator on 2015/11/24.
 */
public final class PropsUtil {
    private static final Logger logger = LoggerFactory.getLogger(PropsUtil.class);
    public static Properties loadProps(String fileName) {
        Properties props = null;
        InputStream is = null;
        try{
            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
            if(is == null){
                throw new FileNotFoundException(fileName + "没有找到");
            }
            props = new Properties();
            props.load(is);
        }catch(IOException e){
            logger.error("获取配置失败！" + e);
        } finally {
            if(is != null) {
                try{
                    is.close();
                }catch(IOException e){
                    logger.error("关闭读取配置流失败！" + e);
                }
            }
        }
        return props;
    }

    public static String getString(Properties props, String  key){
        return  getString(props, key, "");
    }

    public static  String getString(Properties props, String key, String defaultValue) {
        String value = defaultValue;
        if(props.containsKey(key)) {
            value = props.getProperty(key);
        }
        return value;
    }

    public static int getInteger(Properties props, String key, int defaultValue) {
        int value = defaultValue;
        if(props.containsKey(key)) {
            value = CastUtil.castInt(props.getProperty(key));
        }
        return value;
    }

    public static boolean getBoolean(Properties props, String key) {
        return getBoolean(props, key, false);
    }

    public static boolean getBoolean(Properties props, String key, boolean defaultValue) {
        boolean value = defaultValue;
        if(props.containsKey(key)) {
            value = CastUtil.castBooolean(props.getProperty(key));
        }
        return value;
    }
}
